Speaker:Qijun Yan (HIMIS)Time:October 14 (Wed), 2026, 2:30-3:30 pmLocation:HIMIS 7A1Title:On the K₁-level Hecke algebra of GLₙ(ℚₚ)Abstract:Double-coset Hecke algebras are fundamental tools in the representation theory of p-adic groups and the theory of automorphic f
Title:Radon Measure-Valued Solutions and Hypersonic Flows Past BodiesSpeaker:Prof. Hairong Yuan, School of Mathematical Sciences, East China Normal UniversityTime & Location:Oct. 18th, 10:00-11:00am; HIMIS 7A1Abstract:In this talk, we introduce Radon measure-valued solutions to the compres
Speaker: Stavros Garoufalidis (SUSTech)Time: September 23 (Wed), 2026, 4:00-5:00 pmLocation: HIMIS 7A1Title:Can you compute the genus of a knot?Abstract: A knot is a circle in 3-space, allowed to move as long as it does not intersect itself. Every knot bounds an (oriented surface), and the smallest
Speaker:Lynn Heller (HIMIS)Time:September 23 (Wed), 2026, 2:30–3:30 pmLocation:HIMIS 7A1Title:Surfaces and Some Unexpected ConnectionsAbstract:In this talk, I’ll give an introduction to my research through some of my favourite surfaces and the questions behind them. I
Speaker：Matthew Burfitt (HIMIS)Time:September 16 (Wed), 2026, 2:30–3:30 pmLocation:HIMIS 7A1Title:On homology theories of digraphs and quivers and their computabilityAbstract:This talk will be presented with a general scientific audience in mind. No background in topology is required.
Speaker：Promit Kundu (ShanghaiTech University)Time：September 21, 2026, 3:00–4:00 pmTitle：Fixed-Point Loci of Moduli Spaces of Sheaves on Toric OrbifoldsAbstract：I will present a combinatorial description of torus-equivariant sheaves on smooth projective toric orbifolds and apply it to fixed loc
Speaker:Sergey Galkin (PUC-Rio)Time:September 9, 2026, 2:30–3:30 pmVenue:HIMIS 7A1Abstract:In the first 20–30 minutes of the talk, I will revisit my presentation at the NeurIPS 2025 MATH+AI workshop, with a broad audience in mind. I will then discuss further MATH+AI topics
Geometry seminar - Surgeries on knots and tight contact structuresSpeaker:Shunyu Wan (Georgia Institute of Technology)Time:August 10, 3-4pmLocation:HIMIS 7A1Title:Surgeries on knots and tight contact structuresAbstract:Theexistenceandnonexistenceoftightconta
Speaker:Zhen Gao (University of Augsburg)Time:June 16th (Tue), 3 - 4pmLocation:HIMIS 7A5Title:Koszul duality and Milnor fibresAbstract:A certain Koszul duality pattern in symplectic geometry around several types of Milnor fibres has been discovered by Lekili et al. In this talk, I will revisit
Speaker:Ali Ghalavand (HIMIS)Time:June 3rd (Wed), 3 - 4pmLocation:HIMIS 7A1Title:Some Topics in Graph TheoryAbstract:This talk covers our recent solutions to several open problems involving metric dimensions (the smallest size of a resolving set), decycling numbers (the
Title:A p-adic interpolation of the Cogdell liftAbstract:The Cogdell lift is the analogue for Picard modular surfaces of the celebrated Hirzebruch-Zagier theorem. Roughly speaking, the lift takes a class in middle cohomology of a fixed modular surface, and lifts it to a Fourier ser
Speaker：Weiping Li (HKUST)Time:May 20th, 10:30-11:30amLocation:HIMIS 7A1Title:Instanton moduli spaces on the blowup surfaces and affine vertex algebrasAbstract:Vafa–Witten observed that Yoshioka’s blow-up formula for the Euler characteristics of rank 2 instantons on an algebraic surface coincides
Speaker:Rui Dong (HIMIS)Time:May 13th, 10:30-11:30amLocation:HIMIS 7A1Title:Leveraging cis- and trans-variants to improve protein expression level prediction for proteome-wide association studiesAbstract:For an audience more familiar with mathematics than molecular biology, w
Title：Regular Shock Reflection-Diffraction ProblemSpeaker：Prof. Wei Xiang, City university of Hong Kong(CityU)Time：April 30th, 4:00-5:00pm; HIMIS 7A1Abstract：We will talk about our recent results on the convexity, uniqueness, and stability of regular reflection solutions for the potential
Title:Homological branching for GL_2Speaker：Haoran Wang (Capital Normal University)Abstract:Branching problem is a fundamental problem in representation theory. I will talk about the branching problem for mod p representations of GL_2(F), where F is a padic field. This is a joint